Commit 6a1ca035 authored by Durai Manickam KR's avatar Durai Manickam KR Committed by Nicolas Ferre
Browse files

ARM: dts: at91-sama5d27_som1_ek: Added I2C bus recovery support 



SDA and SCL is configured as GPIO for I2C bus to recover during
I2C bus malfunction.

Signed-off-by: default avatarDurai Manickam KR <durai.manickamkr@microchip.com>
Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210914052113.85695-1-durai.manickamkr@microchip.com
parent 6b97032b

arch/arm/boot/dts/at91-sama5d27_som1.dtsi

+11 −1
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
 */

#include "sama5d2.dtsi"

#include "sama5d2-pinfunc.h"

#include <dt-bindings/gpio/gpio.h>



/ {

	model = "Atmel SAMA5D27 SoM1";
@@ -95,8 +96,11 @@ 


			i2c0: i2c@f8028000 {

				dmas = <0>, <0>;

				pinctrl-names = "default";

				pinctrl-names = "default", "gpio";

				pinctrl-0 = <&pinctrl_i2c0_default>;

				pinctrl-1 = <&pinctrl_i2c0_gpio>;

				sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;

				scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

				status = "okay";



				at24@50 {
@@ -113,6 +117,12 @@ 
					bias-disable;

				};



				pinctrl_i2c0_gpio: i2c0_gpio {

					pinmux = <PIN_PD21__GPIO>,

						 <PIN_PD22__GPIO>;

					bias-disable;

				};



				pinctrl_qspi1_default: qspi1_default {

					sck_cs {

						pinmux = <PIN_PB5__QSPI1_SCK>,

arch/arm/boot/dts/at91-sama5d27_som1_ek.dts

+21 −2
Original line number Diff line number Diff line
@@ -131,8 +131,11 @@ 
					i2c-analog-filter;

					i2c-digital-filter;

					i2c-digital-filter-width-ns = <35>;

					pinctrl-names = "default";

					pinctrl-names = "default", "gpio";

					pinctrl-0 = <&pinctrl_mikrobus_i2c>;

					pinctrl-1 = <&pinctrl_i2c3_gpio>;

					sda-gpios = <&pioA PIN_PA24 GPIO_ACTIVE_HIGH>;

					scl-gpios = <&pioA PIN_PA23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

					status = "okay";

				};

			};
@@ -216,8 +219,11 @@ 
				i2c-analog-filter;

				i2c-digital-filter;

				i2c-digital-filter-width-ns = <35>;

				pinctrl-names = "default";

				pinctrl-names = "default", "gpio";

				pinctrl-0 = <&pinctrl_i2c1_default>;

				pinctrl-1 = <&pinctrl_i2c1_gpio>;

				sda-gpios = <&pioA PIN_PD4 GPIO_ACTIVE_HIGH>;

				scl-gpios = <&pioA PIN_PD5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;

				status = "okay";

			};
@@ -253,6 +259,13 @@ 
					bias-disable;

				};



				pinctrl_i2c1_gpio: i2c1_gpio {

                                        pinmux = <PIN_PD4__GPIO>,

                                                 <PIN_PD5__GPIO>;

                                        bias-disable;

                                };





				pinctrl_isc_base: isc_base {

					pinmux = <PIN_PC21__ISC_PCK>,

						 <PIN_PC22__ISC_VSYNC>,
@@ -442,6 +455,12 @@ 
					bias-disable;

				};



				pinctrl_i2c3_gpio: i2c3_gpio {

					pinmux = <PIN_PA24__GPIO>,

						 <PIN_PA23__GPIO>;

					bias-disable;

				};



				pinctrl_flx4_default: flx4_uart_default {

					pinmux = <PIN_PC28__FLEXCOM4_IO0>,

						 <PIN_PC29__FLEXCOM4_IO1>,